What are some consequences of the triangular trade?

One of the consequences was that many people were enslaved. These people, often from West Africa, were forcibly taken from their homes, sold to slave traders, and transported across the Atlantic Ocean on ships on which conditions were very poor. Many of these people became sick and many died. Once they arrived in the Caribbean and in North and South America, they were sold to individuals. They often worked on the farms or plantations of their slave owner. In many instances, families were separated as a result of slavery.
Triangular trade developed, in part, because the Europeans had set up colonies in many places, including Africa, North America, and South America. The Europeans used the triangular trade process to take resources from their colonies in order to make products at home. The Europeans would then sell the finished products in their colonies. In some cases, they took mineral resources such as gold and silver in order to make their countries wealthier. The whole purpose of this system was for the colonizing country to benefit. In many cases, the native populations suffered as new diseases spread among them. They also lost their mineral resources and, at times, they lost the freedom of self-government.
http://www2.open.ac.uk/openlearn/ol_offline/

https://15minutehistory.org/podcast/episode-6-effects-of-the-atlantic-slave-trade-on-the-americas/